Tamil Nadu Rainfall Normals
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Tamil Nadu Rainfall Normals
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*Note - 1)The normals for all the stations are based upon the averages of 30 year period from 1951-80. 2)The normals of Chennai(Mnbk) and Chennai(Ngbk) alone, are based on the averages of 42 year period from 1969-2010.
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COASTAL
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Month/PlaceAdiramapattinamChennai(Ngbk)Chennai(Mnbk)CuddaloreNagapattinamKanyakumariPambanParangipettaiPuducherryTondiTuticorinVedaranyam
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Jan30.220.324.236.749.913.643.29.47.425.415.850.1
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Feb12.616.415.49.412.915.316.49.57.016.918.910.4
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Mar37.76.79.515.610.122.917.716.027.829.636.329.6
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Apr52.810.315.514.030.062.667.913.18.951.558.627.8
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May 61.644.946.947.236.355.346.228.132.751.226.341.0
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June 34.176.272.943.135.581.43.537.523.916.63.930.7
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July71.3106.8116.482.860.855.213.561.577.833.111.343.8
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Aug119.5133.5143.3150.378.246.38.279.5111.136.17.0115.1
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Sep132.4131.6139.9123.476.143.917.7107.0122.247.414.785.3
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Oct294.3307.0302.2273.6259.6150.8184.7291.3290.9216.2154.4284.6
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Nov249.8382.5384.9383.5418.2166.1276.5383.5394.4146.3180.1414.1
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Dec206.4167.7166.4198.5291.483.5198.4243.5159.4146.898.5360.7
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Annual1,302.71,403.91,437.51,378.11,359.0796.9893.91,279.91,263.5817.1625.81,493.2
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INTERIOR
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Month/PlaceCoimbatoreCoimbatore(A)CoonoorKodaikanalMaduraiMettur DamOotyPalayamkottaiSalemTiruchiTirupatturVellore
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Jan8.65.458.333.110.45.210.342.45.114.31.39.0
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Feb6.67.061.728.05.34.68.325.68.15.44.37.1
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Mar13.09.790.256.313.314.619.930.010.59.58.35.9
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Apr49.053.1134.2163.444.345.370.161.941.450.522.021.8
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May 83.981.7118.8148.155.1102.4167.142.1106.965.2103.883.9
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June 34.128.658.088.448.548.5120.010.278.934.958.571.0
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July47.337.279.6136.757.677.1177.910.5113.460.6124.3117.0
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Aug25.620.467.7135.485.595.7108.318.6136.885.5132.4124.9
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Sep45.261.3128.5179.5108.8126.9130.943.0170.9146.6192.5149.6
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Oct148.6129.5313.5259.2189.9170.8191.9162.7208.7191.5190.2176.9
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Nov117.2103.1356.5221.6153.187.2133.0186.691.7131.8101.8155.2
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Dec50.848.8146.7144.163.562.056.190.541.184.442.178.6
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Annual629.9585.81,613.71,593.8835.3840.31,193.8724.11,013.5880.2981.51,000.9
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